Well-drilling rig.



T. W. CONNOLLY.

WELL DRILLING RIG.

APPLICATION FILED NOV. 3, 1909. 1933,99B Patented July 30, 1912.

3 SHEETS-SHEET 1.

x I1 l T. W. CONNOLLY.

WELL DRILLING RIG.

APPLICATION FILED Nov. a, 1909.

Patented July 30, 1912.

3 SHEETS-SHEET 2.

Ik l 1 I l I l l l I l l lx Ly T. W. CONNOLLY.

WELL DRILLING RIG.

APPLIGATION FILED Nov.3,19o9.

Patented July 30, 1912.

3 SHEETS-SHEET 3.

:e110y w., 'coNNoLLin or Los ANGELES, clinlronivrn.A

WELL-DRILLING me.'

Lasso.

Specification of Letters Patent.

Patented July 3o, v1912.'A

Appnauon med november s, 190e. seran no. 526,112.

` America, residing at Los Angeles, in the Vdrill and for regulating the feed Fig. 2 is a section on line :eL-w* county of Los Angeles and State of California, have invented a new and useful Well-Drilling Big, of which the following'is a speeiication.

This invention relates to well' drilling rigs, particularly to the rotary type, and' one object of the invention is to provideI a simple and efective means for driving` the o the drill up or down.

In rotaryV drills it has heretofore been the custom to remove the detritus by hydraulic methods consistingof constantly forcing water under hydraulic pressure down through thev pipe to force the detritus up outside of the pipe with the water, and another object of the present Qinvention is to provide simple mechanicalmeans for removing the` detritus, thereby dispensing with the hydraulic mechanism heretofore necessary.

Other objects and vadvantages of the invention will be brought out in the follow-- .ing description.

Referrin to the drawings: Figure 1 is a side elevatlon of my improved well drilling rig, partly in section on line 'mL-w' 2.

1g. 1. Fig. 3 is a plan view; the lower portion of theimechanism being omitted. Fig. 4 is a vertical, longitudinal section on an enlarged scale of the mechanism. Fig. 5 is a section on line ais-w Fig. 4. Fig. 6 is an enlarged, vertical section through the'drill, and the sand lifter. Fig. 7 is a bottom view ofthbe cutting shoe. Fig. 8 is a top view of the saine. c

form 2 on which is mounted a frame comprising a base plate 3 and four uprights 4 which Asupport a top plateor spider 5 which provides an upper boerin Rotatably mounted above. the base plate 3 which. provides a lower bearing is a bevel gear 6, and above lthe bevel gear 6 is a controlling sheave 7, both bevelgear 6 and controlling sheave 7 being mounted on ball bearings 48, and the controlling. sheave 7 is internally threaded forming a nut 9. v v

Extending thmughthe nut 9 ed .the controlling sheave- 7 and engi the sume is af screw threaded tube 10 which, as clearly 1 designates the dem-ich having a platshown in Fig. 5, is provided with two longitudlnal grooves 11 with which are engaged internal radial' lugs 12 projecting inwardly from the bevel gear 6. The upper end of the tube 10 is slit at 13, as shown in Figs. 1 and 4 and the sections of the screw threads at the upper end are tapered to receive a clamping nut 14 by means of which the upper end of the tube maybe clamped toa section of the boring casing 15.

16 is. a driven shaft mounted in journal bearings 17 atene side of. the derrick and upon the driven shaft 16 are loose pulleys 19 and 20, the loose pulley 2O of which may be caused to rotate with the driven shaft 16 by the clutch 22 engaging with the central cone member 16a fixed to the driven shaft. The driven shaft 16 has two loose pulleys 23 and a tight pulley 24 which is adapted to be driven by either a cross belt 25 or straight belt 26 which may be operated by a belt shifter 27 to drive the driven shaft 16 in either direction from a main shaft 28. A pulley 29 on the main shaft 28 is adapted to be driven through the medium of a clutch 30 and a belt 31 extends from pulley 29 to a pulley 32 on a shaft 33 which carries a bevel pinion 34 which drives the bevel gear 6.

35 is a brake for'controlling the controlover a sheave 40 'at the topof the derrick,

'as shown in Fig. 1,v and is attached to a sand remover, which will be hereinafter described. A cable 41 extends from the loose pulley 20 on the driven shaft 16 to the'controlling sheave 7 for operating the latter.

The pulley 40 has a shaft 43 which normolly rests in notches 44 incross bars 45 at the top of the derrick. Pivoted at 46 in the top of the derrick is a rock yoke 47, the

outer end of which carries a counter-weight 48. A cable 49 is connected to the inner end of the yoke 47 and extends down to a hook 50 near the bottom of the derrick, as shown in Fig. 1. Secured on the arms of the rook yoke 47 are two stop brackets k51 which act to stop the shaft. 43 from running down the rock yoke 47 further than the position shown by dotted lines in Fig. 1.

The sand' whichV is loose enough to 4slide down inside 36 on the shaft 28 operates a" remover comprises a tube`52 the boring casing and atv its lower end is provided with a. series of hinged trianguarshap'ed depending leaves 53 which whenY elevated serve to close the bottom of the tube f referred to.

' through ythe afore'describe clay, san

52.y Within the tube 52 isl a series of rods 54. slidably supported in lugs 55 and at their .upper ends areconne'cted to a swivel 55 rotation to the tube 10 and the latter ing clamped to the boring casing by they nut 14 imparts rotation to the boring casing115, so that the cutting shoe56 cuts-the hole and .throws the detritus toward the center of the hole. As thetube 10 thus rotates `the l controlling sheave. 7, which. is threaded' thereon, rotates with it, except when the cont-rolling sheave is' held stationary, and

thus so long as the controlling sheave 7 .rotates -with the tube 10, there-is no differj ential movement between these tw'o parts tending to move the 'tube-longitudinally.' When, however, it is desired to cause the drill tobe fed down,I the brake 35v is operated to hold'the controlling'sheave 7 'stil1,where upon -as the' tube- 10 continues to revolve itwill b e screwed j down through the station'ar controlling Sheave 7, therebyhloweringY t e drill and boring casing 15. Ity should be understood that when the controlling sheave-7 isthus4 allowed to rotate -with the tube 10 or .is caused to stand motionless under the brake 35 that under either of these two conditions the clutch 22 is set so that pulley 20 is. idle on the shaft 16. Whenever it 1s necessary to elevate the bor# ing casing -15 and drill, the brake 35 being released, theclutch 22 is thrown in, thereby causing the pulley l20 to rotate with the shaft 16, which 'results in driving the controlling sheave 7 at a speed faster than the tube'10 lis driven bythe bevel gear 6, which differential. rotating movement results in impartin a reverse longitudinal movement Y tothe tu e 10 causingl the 'latterto ascend togther with the boring casing 15, and drill. The rate of this ascending movement ldepend u on the diierence between the two seeds .o Athe bevel -s veave 7 both ofywhlch `are the ear 6 andcontrolling conditions the bevel gear 6 will not .be 'running when the boring -casing 15 is to be elevated and, therefore, the ascendmg moveat. such times will have as great aspeed as when it is being fed downward. As the tool 57 throws the earth to the center the sharp pointed'depending leaves 53 descendl in the loose detrltus and when a sufficient 52 the cable 37 is operated by throwing clutch 3 8 in so' that drum 36 revolves with shaft 38, thereby :lifting the rods .54 and .to confinethe detritus within the tube 52.

results in lifting the tube 52 outof the borthehook 50, whereupon the weight 48 overcoming the weight of the tube 52 and its contents tilts the yoke 47 into the position shown in dotted lines in Fig, 1, thereby 'lifting the shaft 43 out of contents acting through'the cable'37 on the stops 5 1, lwhereupon the shock of striking 'on thecable 37 loosensthe leaves 53 suiiciently. to permit the detritus to drop out and be` dischargedA in a heap at ene sideof the derrick, as shown in F1g. 1. Then .the -cable 49 is pulled d own and'rengaged with hook 50 and the pulley 40 'runs .back into its original -in the notches 44. Then the cable 37 is retracte'd-to lower the tube 52 into the vboring casing 15 and down to the bottom thereof.

. What I claim isz.-

,vding a lower bearing, a spider provi ing an upper bearing, upright-s by which the ,spider is supported on the vbase plate, a bevel gear havin internal radial lugs and mount led on the ase plate, a drive shaft having a controlling sheave having an internal screw thread` providing a nut and mounted on. Athe bevel gear, `an externally .screw 4th-readed tube formed' .with longitudinal grooves engaged` by the radial lugs4 of the bevel gear; a bori casing supported on and secured to the tu and ing the controlling she'ave.A

2..A well drillin" rigI rick having a' lat orm, abase'plate rovviding'a lower aring, aspider provi ing spider 1s supportedon the base plate, a bevel gear. having .Internal .radial lu and mountsame directions, but the controlling sheave. 7 running fastest. However, under ordinary ed on thebaseplate, a drive s aft having a bevelpinion meshing with the bevel gear, a

ment of the tube 10 and boring casi-ng 15 amount has accumulated within. the tube.

swinging the leaves 53 into closed-position.

Continued upwardpulling on the cable 37 ingcasin '-15 and as soon as that has been accomplis ed the cable 49 is released from the stops 51 is such that a jerk or reaction a bevel pinionpneshing with the-bevel gear, y

the notches 44, whereupon the weight of the tube A52 .and itsy 9b sheave 40 causes the latter to. roll down on the 'yoke l47 until lthe shaft 43.strikes the eis' ioo

.position with its shaftsresting '.105 i. i 1. A welldrillin rig comprising Aa derrick having. a vplat orm, a base plate ro-v 12o means for drlvcomprising "a -der-y ias an '.upperbearing, .uprights by which the controlling sheave having an internal screw nut to the. tube, and means for driving the 10 thread providing a nut and mounted on the controlling sheave.

bevel gear, an externally screw threaded tube In testimony whereof, I have hereunto Set formed with longitudinal grooves enga ed by my hand at Los' Angeles, California, this the radial lugs of the bevel gear, an With 28 day of October 1909.

a slitted upper end providing screw threadf THOMAS W. CON OLLY.

ed tapered sections, a clamping nut mount- In presence of eden the tapered sections, a borin casingV G. T. HACKLEY,

supported on and secured by the c amping v- FRANK L. A. GRAAMQ- 

